Observed arrival · 2026-09-16
BatteryCross — the battery replacement cross-reference drawn to scale
A searchable reference that compares 215 battery designations by physical dimensions, voltage, chemistry, capacity, fit, and replacement options.
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◎Niche
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Field notes
The reference organizes cells in two directions: by designation and by measured physical envelope. A visitor can enter a code such as CR2032, supply dimensions such as 20 x 3.2 mm, or browse household families including AA, AAA, C, D, and 9V. Its calculations keep physical fit separate from electrical compatibility, with pages also reporting stored energy, energy per cubic centimeter, and the number of designations sharing a shell.
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue